Broadcast band
A broadcast band is a segment of the radio spectrum used for broadcasting.
Common name | Frequencies | Modulation | Frequency range | Notes |
Longwave | 148.5–283.5 kHz | Amplitude Modulation | Low frequency | Mostly used in Europe, North Africa, and Asia |
AM radio | 525–1606.5 kHz, 525–1705 kHz in N. America, Australia and the Philippines. | Amplitude Modulation | Medium Frequency | Usually speech and news, where a lower bandwidth will suffice; long range at night due to the ionosphere increasing in altitude |
Shortwave | Multiple; see Shortwave bands | Mostly AM and single-sideband modes | High Frequency | Very long range through "skipping". Standard time frequencies can be heard here. |
VHF low | 54–88 MHz | vestigial sideband modulation for analog video, and FM for analog audio; 8-VSB or OFDM for digital broadcast | Very High Frequency band I | Channels 2 through 6 are from 54–88 MHz. |
FM radio | 87.5–108 MHz, 76–90 MHz in Japan | Frequency Modulation | VHF band II | Usually music, due to the clarity and high bandwidth of FM. Relatively short range |
VHF high | 174–216 MHz | vestigial sideband modulation for analog video, and FM for analog audio; 8-VSB or OFDM for digital broadcast | VHF band III | Channels 7–13 use 174–216 MHz. |
UHF | 470–806 MHz | vestigial sideband modulation for analog video, and FM for analog audio; 8-VSB or OFDM for digital broadcast | Ultra High Frequency | Channels 14–69 use 470–806 MHz, except for the radio astronomy band at 608–614 MHz where channel 37 would be |